243 Quickload Info.

George Foster · Apr 3, 2015

I was wondering if someone would be kind enough to run a Quick load for the following:

243 Win
75gr HP Sierra
Rem Case
RL19 Powder
Fed 210M Primer
22" Barrel

Thank You in advance.
George

DrMike · Apr 3, 2015

Cartridge : .243 Win.
Bullet : .243, 75, Sierra HP 1510
Useable Case Capaci: 52.253 grain H2O = 3.393 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder-19

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms

-20.0 82 39.60 2633 1155 29864 9426 82.6 1.341
-18.0 84 40.59 2701 1215 31931 9773 84.2 1.308
-16.0 86 41.58 2770 1278 34143 10115 85.8 1.276
-14.0 88 42.57 2839 1342 36513 10449 87.3 1.244
-12.0 90 43.56 2908 1409 39051 10773 88.8 1.205
-10.0 92 44.55 2978 1477 41770 11087 90.2 1.168
-08.0 95 45.54 3048 1547 44691 11390 91.5 1.132
-06.0 97 46.53 3118 1619 47824 11678 92.8 1.098
-04.0 99 47.52 3188 1693 51188 11951 93.9 1.064 ! Near Maximum !
-02.0 101 48.51 3258 1768 54805 12209 95.0 1.032 ! Near Maximum !
+00.0 103 49.50 3329 1845 58696 12447 96.0 1.001 ! Near Maximum !
+02.0 105 50.49 3399 1924 62883 12667 96.9 0.970 !DANGEROUS LOAD-DO NOT USE!
+04.0 107 51.48 3469 2004 67359 12865 97.6 0.941 !DANGEROUS LOAD-DO NOT USE!
+06.0 109 52.47 3539 2086 72167 13041 98.3 0.913 !DANGEROUS LOAD-DO NOT USE!
+08.0 111 53.46 3609 2169 77344 13194 98.9 0.886 !DANGEROUS LOAD-DO NOT USE!
+10.0 113 54.45 3678 2253 82926 13322 99.3 0.860 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 103 49.50 3506 2047 70238 12549 99.6 0.924 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 103 49.50 3102 1602 47885 11732 88.4 1.098

George Foster · Apr 3, 2015

Thank You Dr. Mike, I appreciate it.

George

Guy Miner · Apr 3, 2015

George - I can tell you that little 75 gr Sierra is both accurate and absolutely devastating on rock chucks... From my 6mm Rem.

George Foster · Apr 3, 2015

Guy, I have been using that bullet for close to 40yrs now in both the 243's and my 6mms. Yes it is a very devastating bullet on woodchucks and crows also.

rick3 · Apr 4, 2015

George,

Another .243 lover here! I just do target shooting now (haven't hunted since I was MUCH younger), but it looks like that bullet might just be the next one I need to test in my rifle.

rick3

George Foster · Apr 4, 2015

rick3, another good bullet for varmint hunting is the Hornady 75HP. I like the Sierra the best though.

LD375 · Apr 4, 2015

rick3":1l88yond said:
George,

Another .243 lover here!

+1

I really like mine as well

George Foster · Apr 4, 2015

I actually like my 6mm's a little better than my 243's but there isn't enough difference to make a difference. It is just that I owned a 6mm first and I had excellent results with it. That is not to disparage the 243's at all as I have had excellent results with those also.